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  • VOA标准英语2011--New Ebola Vaccine Proves Effective in Mice

    New Ebola Vaccine Proves Effective in Mice U.S. scientists have developed a new vaccine against the deadly ebola virus which has the potential to remain potent after years of storage. Ebola is one of the deadliest viruses known. It kills about nine o...

  • VOA标准英语2011--NASA Probe Proves Einstein Right

    NASA Probe Proves Einstein Right Albert Einstein was right. The U.S. Space Agency (NASA) released data this week from its Gravity Probe B spacecraft, whose primary mission while in Earth's orbit was to test Einstein's 1916 Theory of Relativity. While...

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